Gram staining

biochemical tests were performed that were specific to the gram- negative bacteria to start the identification process of the unknown. The results of the gram negative tests lead to the identification of the bacteria Alcaligenes faecalis. The gram stain procedure was the first test performed by isolating a colony from the pure culture streak plate. The gram stain was followed orderly right from the referenced laboratory manual. The test resulted to be Gram- Negative bacteria from the compound…

How does the location of a body part effect the bacteria population present on the said part? What has more bacteria the inside of a person's mouth or a person's index finger? My biology class is learning how to conduct experiments, and last week for our experiments we were broken into groups and given instructions to swab any two different objects. After swabbing our two objects, we were then suppose to wipe each swab onto a divided petri dish in order to see which object had more bacteria.…

bacteria. Test used to find the morphology characteristics of the unknown yielded that the colony of the unknown was yellow pigmented and the shape of the cell was rod. More information was found by examine the cell wall structure of the bacteria, Gram test revealed…

The aim of this experiment is to identify and classify of an unknown bacterial isolate. Morphological and Biological test were preformed to identifiy the isolates characteristics. The following characteristics were tested: gram-stain, motility, morphology, hemolysis, lactose fermetation, mannitol fermentation, osmotolerance, aesculin hydrolysis, starch hydrolysis, gelatine hydrolysis, amino acid decarboxylation, lipid hydrolysis, lactose fermetation, casein digestion, catalase enzyme production,…

my unknown organism the first thing I needed to do to get started was to do a gram stain. This would help me decide which kind of further testing would need to be done in order to help identify the organism that is causing gastrointestinal distress in Brown County. After doing a gram stain test on my unknown, I found that it was a gram negative organism. This prompted me to do some tests that are specifically for gram negative organisms. When I looked under the microscope I seen some rod shaped…

DISCUSSION: Pseudomonas aeruginosa was selected to study their antimicrobial activity due to the production of pyocyanin, an antimicrobial phenazine pigment. For this study different clinical specimen were collected and from these P. aeruginosa was isolated. To isolate good pyocyanin producing P. aeruginosa, repeated plating of all the isolates on cetrimide agar helped in final selection of the 5 isolates. To examine the antimicrobial activity of those isolates, in vitro inhibition by cross…

Haley Collins Ms. Graham Period 3 Biology H February 27th 2015 Bionic Antibiotics VS. Bacteria Abstract: The bacteria lab preformed in class tested the effectiveness of antibiotics against bacteria. During the lab we tested the antibiotics penicillin, streptomycin and tetracycline against the bacteria Escherichia coli and Staphylococcus epidermis in order to determine which antibiotics fought which bacteria most successfully. In order to monitor the experiment, we kept a control sample in…

species the whole purpose is to benefit us in order to better understand what this species is capable of. Throughout a general basis of identifying an unknown species we must figure out either it will become a gram-positive or gram-negative type of bacteria and in doing so we must do a gram staining method. This method works because it will direct us to what test we can do next based off either it is negative or positive bacteria, which is exactly what I had done for my unknown. These…

Muscular men with superhuman features is the definition of a hero on google. Even though superheroes in comics can be heroes, true heroes are ones who normally aren’t recognized for their physical features, but their actions. In The Outsiders, by S.E. Hinton, Darrel Curtis is considered a hero because he raises and cares for his siblings and friends. Darry can also be recognized as an anti-hero considering he slapped Ponyboy in anger. “Tragedy of college student, 19, left to raise her three…

performed a gram stain on each of the bacteria. I observed each bacterial slide on a microscope under 1000X resolution. The bacterium labeled 7A showed multiple staphylococcus arrangements that were stained red. I determined that this bacterium was gram negative because of red color of the bacteria. The bacterium labeled 7B showed multiple single bacilli that were stained purple. I determined that this bacterium was gram positive because of the purple color of the bacteria. By performing the…